[GRASS-user] logarithmic scale in raster legend

[Veronica Andreo]

Hi :)

2014-06-13 14:23 GMT-03:00 L. Prevett <prevettl at gmail.com>:

> Have you tried using the echo command to pipe variables and characters to
> d.text  for user defined labels and ticks? It takes some work with the
> at=x,y coords to get the legend, labels and ticks where you want them.
>
>   echo "message" | d.text size=3 at=37,25 color=orange
>
> Nope, this I haven't tried... i did it just now, and it seems it doesn't
work with echo, but as:

d.text text="bla" at=30,30 size=6 color=red

I'd wish there was a flag or button for this task :-/
Thanks for the tips!

Best,
Vero



> On Mon, Jun 9, 2014 at 8:36 AM, Veronica Andreo <veroandreo at gmail.com>
> wrote:
>
>> Hi list!
>>
>> I have these raster maps of chlorophyll concentration (mg/m3) with a lot
>> of very small values (from 0.02 to 1.5) and few high values (between 20 and
>> 100)... I managed to create my own color table to get a good visualization
>> of the variation... but when I display the legend, i loose the color
>> variation in smaller values...
>>
>> Is it possible to create a logarithmic legend or at least determine which
>> tick-marks I'm interested in?? I've tried with "use" parameter in d.legend
>> (which seemed to meet my needs) setting it to: 0.01,0.1,1,10,100, but works
>> only for categories... There's no such a thing in ps.map, either... which
>> would be the right approach? any ideas?
>>
>> Thanks much in advance!
>> Best,
>>
>> Vero
>>
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>
>
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